Abstract: A method and an apparatus for switching input terminals based on a transmitted signal format are disclosed. The method includes issuing a command to a receiver (12) when a format of the signal has changed from digital to analog. The receiver (12) switches to an analog input terminal (122) according to the command. The apparatus includes a transmitter (10) and a receiver (12) connected with each other with a digital interface (14) and an analog interface (16). The transmitter (10) has a command generator (106) that issues the command. The receiver (12) includes a switch (128) to select an input terminal, and a selector to control the switch according to the command provided from the transmitter. The receiver also includes a digital signal processor (124) coupled to the digital interface to decode digital signals.

Abstract: A display system is provided, which makes it possible to switch automatically from a single image mode to a dual image mode, and vice versa, without input of any switching signal. When an image is displayed on the screen of the display device in the single image mode according to the first video input sent through the first input line, the first detector outputs the first detection signal. Thereafter, if the second detector detects the synchronizing signal of the second video input sent through the second input line, the second detector outputs the second detection signal. This means that the switch receives both of the first and second detection signals in this state. As a result, the switch selects the dual image mode and accordingly, the two images are simultaneously displayed on the screen of the display device.

Abstract: A method and an apparatus for switching input terminals based on a transmitted signal format are disclosed. The method includes issuing a command to a receiver (12) when a format of the signal has changed from digital to analog. The receiver (12) switches to an analog input terminal (122) according to the command. The apparatus includes a transmitter (10) and a receiver (12) connected with each other with a digital interface (14) and an analog interface (16). The transmitter (10) has a command generator (106) that issues the command. The receiver (12) includes a switch (128) to select an input terminal, and a selector to control the switch according to the command provided from the transmitter. The receiver also includes a digital signal processor (124) coupled to the digital interface to decode digital signals.

Abstract: A display processor integrated circuit includes a display processor portion and an on-chip programmable logic portion. The programmable logic portion can be configured to implement custom video and/or image enhancement functions. The display processor portion performs block-based motion detection. If no motion is detected for a given block of pixels, then interline gaps in the block are filled using temporal interpolation. If motion is detected, then interline gaps are filled using spatial interpolation. To maintain accuracy without unduly increasing computational complexity, a less complex high angle spatial interpolation method is employed where a low angle tilt condition is not detected. A more computationally intensive low angle spatial interpolation method can therefore be employed in low angle tilt conditions. Integrated circuit cost is reduced by employing pipelining to write parts of segment buffers at the same time that other parts are being read to perform the interpolation process.

Abstract: A method and apparatus for switching input terminals based on device capability are disclosed. The method supplies a digital signal and an analog signal to a device. The method includes examination of whether or not a device is receiving a digital signal in an eligible format. The method also selects an analog input terminal to receive an analog signal unless the digital signal is being provided in the eligible format. The apparatus includes a digital input terminal to receive a digital signal, an analog input terminal to receive an analog signal, an IEEE1394 interface coupled with the digital input terminal, a HD decoder coupled with the IEEE1394 interface, a memory and a selector which selects the digital input terminal if the digital signal is in an eligible format for the device. The apparatus otherwise selects the analog input terminal.

Abstract: A multiple signal input device of a decoder ASIC in a DTV system, having a plurality of internal decoders decoding a plurality of signals inputted from a plurality of input ports, is disclosed, which includes the plurality of input ports having the same function; and a plurality of internal multiplexers respectively provided for being corresponding to the plurality of internal decoders between the input ports and the internal decoders, and selectively outputting a predetermined signal among signals inputted by the plurality of input ports according to a control signal, wherein, each input terminal of the internal multiplexers is electrically connected with the plurality of input ports, and each output terminal of the internal multiplexers is electrically connected with one corresponding internal decoder.

Abstract: A video monitor including circuitry that provides information regarding characteristics of the monitor to an external video source. The circuitry may be a register that holds data from which the aspect ratio and resolution of the display may be derived.

Abstract: An EPG extraction portion extracts EPG information; a program type decision portion decides the type of broadcast program using the extracted EPG information, and outputs a ratio modification signal to change the ratio of the image display interval to the black display interval according to the program type; a driving pulse generation portion generates a gate driver control signal which changes the write timing of a frequency-doubled image signal and frequency-doubled black display signal in one field interval, according to the ratio modification signal; and, a gate driver changes the write timing of the frequency-doubled image signal and frequency-doubled black display signal according to the gate driver control signal, to change the ratio of the image display interval to the black display interval.

Abstract: A digital television converter is provided, for example for performing all of the functions of a set top box for receiving digital terrestrial or satellite television broadcast signals. The converter comprises a SCART connector for mating with a mating connector on a television apparatus, such as a television receiver or a VCR, which is incapable of reception of digital television broadcasts. This connection provides electrical contact with the apparatus and provides mechanical support for the converter. The converter also comprises a tuner which selects and demodulates a television channel for reception and supplies to the connector signals in a form suitable for use by the television apparatus. A connector rear housing completes the enclosure for the converter containing the tuner.

Abstract: A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy VSB receiver for processing the data received from the VSB transmission system in a reverse order of the VSB transmission system by using the sequence, and a demultiplexer for demultiplexing the data from the modified legacy VSB receiver into the MPEG data and the supplemental data. The VSB reception system also includes a supplemental data processor for processing the supplemental data segment from the demultiplexer in a reverse order of the transmission system, to obtain the supplemental data, thereby carrying out the slicer prediction, decoding, and symbol decision more accurately by using the predefined sequence, to improve a performance.

Abstract: A method and an apparatus for switching input terminals based on a transmitted signal format are disclosed. The method includes issuing a command to a receiver when a format of the signal has changed from digital to analog. The receiver switches to an analog input terminal according to the command. The apparatus includes a transmitter and a receiver connected with each other with a digital interface and an analog interface. The transmitter has a command generator that issues the command. The receiver includes a switch to select an input terminal, and a selector to control the switch according to the command provided from the transmitter. The receiver also includes a digital signal processor coupled to the digital interface to decode digital signals.

Abstract: A switched input video device has a switched input, video improvement circuitry and/or transcoder circuitry, and a switch for communicating a switched input to at least one of the video improvement circuitry and the transcoder circuitry.

Abstract: A television apparatus and method provides visual/audio feedback to a user via the auxiliary image (i.e., PIP window) simultaneously during the menu selection process for configuring the television system. The apparatus enables a user to verify the connection between an auxiliary video/audio source device (e.g., DVD player, satellite receiver, VCR etc.) and a desired input source of the television receiver during the configuration process of the television system. The television apparatus includes a television receiver suitable for generating video output signals for displaying a multi-image on a display device. The multi-image displays comprise a main image corresponding to the currently tuned/selected input signal and an on-screen display (“OSD”) of a configuration menu. The multi-images comprise the main image, the configuration menu and an auxiliary image, such as picture-in-picture (PIP) and picture-outside-picture (POP) displays.

Abstract: Described is a TV system that uses a single pixmap across multiple video rasters having different raster sizes. In general, the TV system uses at least two headers to select different portions of a single pixmap to be displayed based on different raster sizes. Specifically, each of the two headers points to a single pixmap. In the TV system, the size of the central portion is fixed while the size of the sidepanel portion can be adjusted depending on the displaying mode. In response to different displaying modes, the TV system selectively invokes one of the two headers to select a respective portion to be displayed in the pixmap. By doing so, a single pixmap can be used across multiple video rasters having different raster sizes.

Abstract: For use in a digital television receiver, there is disclosed a system for receiving audio and video digital signals. The system comprises a digital network interface coupled to a digital main board for receiving baseband audio and video digital signals and a digital video decoder coupled to the digital network interface for decoding audio and video digital signals from the digital network interface. The digital video decoder sends the decoded signals to the digital main board. The system also comprises an analog television chassis having an input that is capable of receiving audio and video analog signals. The digital main board digitizes the analog signals into a digital transport stream prior to processing.

Abstract: A digital TV receiver 2 receives digital TV broadcasts and an analog TV receiver 1 receives analog TV broadcasts. A switching control 6 switches between either digital or analog signals to a speaker 7 and a display 8, according to the conditions of received digital and/or analog broadcast waves. Digital broadcast outputs, such as images, cannot be obtained if the field intensity of received broadcast waves is too low for the application of error correction to them. Even in that event, the present equipment can continue image outputs by switching to the analog broadcast. Preferably, the switching control 6 uses the packet error rate during the demodulation of received digital broadcast signals as the index of the conditions of the received waves to perform an output switch between digital and analog broadcasts, according to the error rate.

Abstract: A method and apparatus for building and maintaining a database in a digital television receiver from information received in MPEG and PSIP tables uses the MPEG tables as a master to facilitate creating, updating, and deleting the database. Each database entry is encapsulated in a memory chain control structure such that freeing memory does not-require consideration of the specific content of data in the database.

Abstract: A television including a CS digital circuit to receive a CS digital television broadcast signal. A micom circuit detects a broadcast mode of the digital television broadcast. Where the broadcast mode is in a first mode, or usual broadcast mode, the power supply to a video output section and audio output section, for example, is turned on to output video images and sound respectively through a CRT and a speaker. Also, where the broadcast mode is in a second mode, or radio broadcast mode, the power supply to the video output section is turned off. Where the broadcast mode is in a third mode, or data broadcast mode, the power supply to both the image output section and the audio output section is turned off.

Abstract: Systems and methods are disclosed for filter modules in a video display system or network. One embodiment relates to a method for operating a filter module in a video display network comprising determining a picture type, display type and operation of the display network. The method further comprises determining, in real time, a filter configuration from a plurality of possible filter configurations based on the determined picture type, display type and operation.

Abstract: The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period of a data enable input signal; and an input signal generating section for holding a count value and generating an input signal in a driver IC and a driving circuit corresponding to a resolution of the display device which is obtained at that time by utilizing a count value held at a last time for a next horizontal cycle or a next vertical cycle, the display device being applicable to the driver IC and the driving circuit which can be used for the display device having various resolutions.

Abstract: A television (TV) receiver includes a multi-standard channel filter with a programmable intermediate frequency adapted to receive television signals in a variety of television standards and formats. In one embodiment, a receiver includes a tuner and a channel filter. The tuner receives input RF signals encoding information in one of a number of formats and converts the input RF signals to intermediate signals having an intermediate frequency (IF). The intermediate signals are coupled to the channel filter. The channel filter includes an anti-aliasing filter for filtering the intermediate signals, an analog-to-digital converter for sampling the filtered intermediate signals and generating a digital representation thereof, and a signal processor for processing the digital representation of the intermediate signals in accordance with the format of the input RF signal. The signal processor generates digital output signals indicative of information encoded in the input RF signal.

Abstract: The present invention discloses a receiving apparatus for receiving image data. The configuration of the receiving apparatus is disclosed. That is, the receiving apparatus includes a reception circuit for receiving first image data for displaying an image in a first display area in a maximum display area of a display apparatus, second image data for displaying an image in a second display area in the display area, and information related to image displaying in the first display area, and a control circuit for generating a signal for requesting transmission of the first image data of an apparatus for controlling the transmission of the first image data, on a basis of the information. The information is information specified by a transmitter of the second image data.

Abstract: An image data conversion processing device including an issue unit, plural line storing units and a generating unit for converting to a television signal image data stored in plural kinds of developing formats in a storing unit. The image data comprises plural lines, and the television signal comprises a predetermined number of lines. The issue unit issues a transmission instruction of image data to the storing unit in accordance with a period specified by a ratio of the number of lines the image data to be converted and the line number of the television signal. The plural line storing units cyclically store the image data transmitted from the storing unit line by line on the basis of the transmission instruction of the issue unit.

Abstract: A method of displaying a digital broadcasting signal using a digital broadcasting receiver and a digital display device is disclosed. In the present invention, information on a display mode of the display device is communicated to the digital broadcasting receiver through a bi-directional communication line. As a result, the digital broadcasting receiver can process the input digital broadcasting signal according to the display mode. Thus, the digital broadcasting signal can be displayed in an optimum display mode through the digital display device. Accordingly, the received digital broadcasting signal can be displayed in diverse formats and in an optimum condition.

Abstract: A digital television receiver that decodes multiple programs concurrently to reduce the amount of time needed to display an adjacent channel in a channel surfing operation includes a single transport decoder and a single video/audio decoder. The transport decoder decodes multiple transport streams in a single channel. Each transport stream represents a respectively different minor channel transmitted in the major channel. When a channel change operation occurs, the audio/video decoder selects the next transport stream that is provided by the transport decoder. In another embodiment of the invention, the single video/audio decoder includes multiple buffers and concurrently decodes multiple program streams. When a program switch occurs, the program stream for a next buffer is provided to the video display. In yet another embodiment, the television receiver includes multiple tuners, each capable of receiving a respective channel.

Abstract: An object of the present application is to provide the display of motion picture data used in both of analog and digital broadcasts with high picture quality and a common user interface. The above object can be achieved by providing a plurality of picture format converters, a plurality of OSD circuits, and means for storing motion picture data used in an analog broadcast in a common memory.

Abstract: A digital broadcast is received by a receiving unit 5, and is output from a speaker 9. During a waiting time for changing-over of channels, or the like, a control unit 11 causes a holding sound generating unit 15 generate a holding sound as a waiting signal. The holding sound is an intermittent synthetic sound, whose pitch is shortened according to the remainder of the waiting time. In another embodiment, the channel selected by a user is received and output with one receiving unit, and at the same time, the channels other than the selected channel are received and stored with another receiving unit. During the waiting time due to the changing-over of channels, received signals of the selected channel are read out and output. A user can be informed of the content of a broadcast during the waiting time.

Abstract: A digital TV system and a method for supporting a film mode in a digital TV system include generating an original frame from two fields except for repeated fields among 60 fields inputted in an interlaced scanning method if the film mode is detected, and converting the generated frames into 60 frames of a progressive scanning type by repeatedly outputting the generated frames three times or twice by a specified rule, setting an input audio signal to match the film mode in consideration of the number of speakers provided in the digital TV and the number of channels of the input audio signal, and displaying an icon for indicating the film mode on a predetermined position of a TV screen. Thus, a viewer can view the film with a higher picture quality and with reality through the DTV.

Abstract: A system for providing a common transport signal comprising an analog information signal and a digital information signal including a transmitter and a receiver for the common transport signal is disclosed. The transmitter includes an analog information signal modulator, placing the analog information signal onto a first intermediate frequency, a digital information signal modulator, placing a digital information signal onto a second intermediate frequency, a first upconverter and amplifier for upconverting the analog information signal, and a second upconverter for upconverting a frequency translated digital information signal. The system includes a power combiner for adding the upconverted analog and digital information signal to form a common transport signal. The receiver includes a signal receptor and conditioner, a signal splitter and dual signal recovery chains; each chain including at least a downconverter, a bandpass filter and intermediate frequency amplifier, and a signal demodulator.

Abstract: A combined terrestrial wave/cable broadcast receiver is disclosed which identifies if a cable broadcast program being carried and received or a cable broadcast program to be received is a HD broadcast and receives a HD broadcast from a terrestrial wave broadcasting station in the form of a HD terrestrial wave broadcast automatically or according to a user's selection, and a program information processing method therefor which processes program information such that it can identify a cable broadcast program as a HD broadcast in an EIT.

Abstract: A transport stream TSd generated from a digital broadcast signal and a transport stream TSa generated from an analog broadcast signal are recorded simultaneously and a portion of TSd wherein the reception state of the digital broadcast is bad is replaced with TSa corresponding to the defective portion for compensation. A composite TS consisting of good TSd and TSa corresponding to defective TSd 102 is formed and recorded.

Abstract: An apparatus for processing a signal in a digital television, and more particularly, an apparatus for adaptively processing an externally-input video signal in a digital television, in which a signal processing route is controlled to automatically determine the type of a video signal, which is input to an external input terminal, and to adaptively process the video signal regardless of whether the signal is an interlaced scanned video signal or a progressive scanned video signal, is provided.

Abstract: An integrated tuner is programmable to optimize its components for either analog signal reception or digital signal reception. Power to the components is increased for analog operation and decreased for digital operation. The tuner also includes a selectable and integrated low noise amplifier that may be selected for single-signal reception and bypassed for multi-signal reception.

Abstract: A method and system for notifying a viewer of the arrival or presence of one or more video input signals in a video display system, such as a personal computer (PC) or television (TV) system. If a video signal is already present, the system may optionally notify a viewer of the termination or absence of the video signal. The invention further provides the viewer with the opportunity to dynamically select the video source to view. Upon sensing the presence of a new video signal, the system alerts the viewer who may then select whether to view the new video signal or maintain prior viewing status.

Abstract: A method and apparatus for processing video data in which a decoder receives video data and decodes the video data into fields based on content format. The decoder generates a flag associated with the content format, which is used to control how the fields are stored and retrieved from memory for display on a display device.

Abstract: Tuners are adapted to accept a received signal input and provide both a desired tuner output and the received signal as an output. Accordingly, a single tuner circuit, preferably an integrated circuit, may be cascaded to provide a multiple tuner configuration. Any number of such integrated circuit tuners may be cascaded together for a multiple tuner applicaion. Alternative embodiments provide a multiple tuner adapter for cascading devices.

Abstract: A PLL circuit compares a PCR with the output frequency of a voltage controlled oscillator (VCO), and returns a voltage value which is the result of the comparison to the VCO, so that a reference clock corresponding to the PCR is outputted from the VCO. A switch supplies a control voltage from the PLL circuit to the VCO when digital broadcasting is viewed, while feeding a fixed voltage from a fixed voltage power supply to the VCO when analog broadcasting is viewed, to stably output a clock having a frequency of 27 MHz irrespective of the change in the PCR.

Abstract: A television (TV) includes a circuit board (PCB) into which a digital video interface (DVI) receiver integrated circuit (IC) may optionally be mounted, and also includes other video sources. The TV includes a processor or controller which controls its operation, and also includes an analog switch coupled to the analog sources and to the PCB at the receiver, for switching among video sources. A scan port of the IC is coupled by way of a resistor to a general purpose I/O (GPIO) port of the switch, for indicating the presence of DVI video. The resistor has a value which places a logic low at the GPIO port when the optional receiver is present, and to allow the GPIO port to be pulled high when it is absent. A controller determines the presence or absence of the optional DVI IC by examining the logic state of the GPIO port.

Abstract: A multi-standard channel decoder for real-time digital broadcast reception has a plurality of processors connected to a sample-based communication unit for sample-based processing and connected to a block-based communication unit for block-based processing. The channel decoder is able to use the same processors to channel decode sample-based transmissions such as 8-VSB broadcasts and block-based transmissions such as COFDM broadcasts.

Abstract: The present invention is directed to a display device such as a liquid crystal display including: a horizontal clock counter and a vertical clock counter which count each clock signal every horizontal cycle and every vertical cycle for a valid data period of a data enable input signal; and an input signal generating section for holding a count value and generating an input signal in a driver IC and a driving circuit corresponding to a resolution of the display device which is obtained at that time by utilizing a count value held at a last time for a next horizontal cycle or a next vertical cycle, the display device being applicable to the driver IC and the driving circuit which can be used for the display device having various resolutions.

Abstract: The invention relates to a method for displaying graphics in a digital television receiver. A data stream which is provided with video data in the digital format is provided. A first YUV signal having a first frequency screen in the digital format is generated from the video data. The first YUV signal is converted into a second YUV signal having a second frequency screen in the analogous format. An RGB signal having a third frequency screen in the digital format is provided Said RGB signal is provided with graphics data. A mixed signal is provided by means of which the second YUV signal and the RGB signal are mixed together.

Abstract: The present invention relates to an information signal processor and the like preferable for use in the case of converting a format of an image signal or converting an image size. An input image signal, Vin, is converted into an output image signal, Vout that has different format and/or size therefrom. A class code, CL, is obtained from tap data extracted from the Vin and corresponding to each pixel (pixel at a target position) within a unit pixel block, which constitutes Vout.

Abstract: A method and system for notifying a viewer of the arrival or presence of one or more video input signals in a video display system, such as a personal computer (PC) or television (TV) system. If a video signal is already present, the system may optionally notify a viewer of the termination or absence of the video signal. The invention further provides the viewer with the opportunity to dynamically select the video source to view. Upon sensing the presence of a new video signal, the system alerts the viewer who may then select whether to view the new video signal or maintain prior viewing status.

Abstract: A video processor card stores tap generation information for determining a predetermined tap coefficient when the tap generation information is used together with tap generation information stored in another video processor card, and supplies a video processing interface with the tap generation information. The video processing interface generates the tap coefficient from the tap generation information of the one video processor card and the other video processor card loaded therein. The video processing interface extracts video data having a predictive tap used to predict a target pixel and video data having a class tap used to classify the target data, and class classifies the target data based on the class tap. The video processing interface determine the target pixel based on the tap coefficient and the predictive tap of the class of the target pixel.

Abstract: A method and apparatus for synchronizing multiple signals is provided. The method and apparatus utilize the timing information of one of the multiple signals as a reference clock for synchronizing multiple signals. The method and apparatus utilize selectively gating the clocks of the other signal processing chains in order to allow control by the reference clock.

Abstract: A method and device for adapting an existing analog television receiver to receive and decode both analog and digital television signals. A digital module is provided within the analog television receiver and its output is provided to the picture-in-picture (PIP) interface of an analog module within the receiver. The digital signal then has the benefit of using the picture improvement circuitry located within the analog module and there is no need to modify the analog module which has been in the cost optimization process for years.

Abstract: There is provided an image processing apparatus for temporarily stopping reproduction of an accumulation image automatically when a display mode for displaying a broadcast image (image obtained from a broadcast wave) and the accumulation image (image obtained from a storage medium) is switched to a display mode for displaying only the broadcast image, and automatically resuming the reproduction of the accumulation image when the display mode for displaying only the broadcast image is switched to the display mode for displaying the broadcast image and the accumulation image.

Abstract: Television receivers receieve a television signal and downconvert the television signal to generate a complex baseband signal. The complex baseband signal is differeniated and then integrated to reduce a direct current (DC) offset in the complex baseband signal. The television receiever may include a periodic known information field. The known information field is correlated with the integrated signal to determine a residual offset therein that is associated with a constant used in integrating the differentiated complex baseband signal. The residual offset is substracted from this constant when integrating the differeniated complex baseband signal.

Abstract: A data broadcasting receiver apparatus includes a receiver for receiving image data of the image of an object and size information relating to the object, transmitted through data broadcasting, an input unit for inputting screen information relating to a display screen of a display, a scaling unit for determining a scale factor of the object image based on the screen information input by the input unit and the size information received by the receiver so that the object image is displayed on the display at a predetermined size, and a display control unit for controlling the display to display the object image expanded or contracted at the scale factor determined by the scaling unit.

Abstract: A digital broadcast receiver unit for determining the scanning method of the video signal of the selected program when signals multiplexed through a plurality of different scanning methods are received, processing these video signals by an appropriate video signal processor constituting a video encoder, and then outputting the result.